References
A source of comparison.
See Also: Reference Standards, Reference Antennas, Reference Decoders, Reference Jumpers, Reference Sources, Reference Transformers, Reference Transmitters, Acoustical References, Frequency References, Solar Reference Cells
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Voltage References
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Renesas' wide selection of voltage reference (Vref) circuits offer accurate and stable reference voltages unaffected by external influences such as variation in temperature, input voltage and time.
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Precision SOT-23 FGA™ Voltage References
X60003
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The X60003 FGA™ voltage references is a very high precision analog voltage reference fabricated in Renesas' proprietary Floating Gate Analog technology, which achieves superior levels of performance when compared to conventional band gap, buried zener or XFET™ technologies.
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Micropower Voltage References
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Analog Devices offers a broad line precision micropower voltage references with extremely low quiescent currents (series references) or minimum shunt currents (shunt voltage references). All of our precision voltage references offer excellent initial accuracy and low temperature drift over time and temperature. Our Reference Plus products combine precision voltage references with comparators or amplifiers.
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Shunt Voltage References
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Analog Devices offers a broad line of shunt precision voltage references that combine excellent accuracy and temperature stability with low noise and small packages. These devices operate in a manner that is functionally equivalent to a Zener diode. The bias current must be set higher than the sum of the maximum quiescent current of the voltage reference and the maximum expected load current. Since shunt voltage references are typically biased with a resistor, the voltage reference can operate on a wide range of input voltages.
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Reference Magnet
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Reference magnets generate a homogeneous magnetic field in an air gap. They are mainly used to calibrate hall probes for their full scale value of output for the magnetic field strength H or the magnetic flux density B they measure. For example Gaussmeters can be calibrated by using reference magnets.
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GPS Frequency Reference
E8000
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The Quartzlock E8000 GPS Frequency Reference is a breakthrough in exceptionally low cost, traceable, 1-U rack mount, calibration-free, off-air frequency & time standards. These very low cost references maintain the high frequency & time accuracy required for demanding applications. Ultra low noise option are available.
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Carrier Boards
ROM-DB7502
Carrier Board
ROM-DB7502 is the Referenced Carrier Board designed for Advantech's Qseven 2.0/2.1 module. It i provides a thorough environment for module board evaluation with its completefunction support. It also supports 12V power input through AC/DC power adapter and with smart battery design, it's more easier for the end user to design portable devices by referring ROM-DB7502 design.
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Ion 700 Benchtop Meters
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Oakton benchtop 700-series meters are designed for use in crowded laboratory settings. Compact footprint of less that 6" x 7" (16 x 18 cm) conserves valuable space, while the large, dual-display LCD provides excellent visibility—even from a distance. Ion 700 meter measures pH, mV, relative mV, ion concentration and temperature. Automatic temperature compensation (ATC) maintains reading accuracy even with fluctuating temperatures. Models feature five-point pH calibration with automatic buffer recognition for both USA (pH 1.68, 4.01, 7.00, 10.01, 12.45) and NIST (pH 1.68, 4.01, 6.86, 9.18, 12.45) pH buffers. Meters additionally feature ion concentration calibration of up to 5 points. Meter features include Auto-Hold, selectable °F or °C measurement, and easy recall of electrode slope or offset. The convenient pull-out quick reference card keeps procedures handy at all times. Use 700-series meters with any pH, ORP, or ISE electrodes with a BNC connector.
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Stationary Test Equipment
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Single- and three-phase, standardized and individual test systems are covering all legal metrological test requirements for simple meters, high precision multifunction meters, smart meters and reference standards. Flexible and modular system components for the optimal customer orientated solution.
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Radiation Detectors
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A radiation detector is a device for measuring nuclear, electromagnetic or light radiation. A nuclear radiation detector identifies nuclear radiation by measuring the emission of ionizing radiation of alpha particles, beta particles and gamma rays. Also referred to as a geiger counter, a nuclear radiation detector consists of two main elements: the processing electronics and the geiger tube. The geiger tube is filled with low-pressure inert gas like helium, argon or neon. If radioactive radiation occurs, the inert gas is ionized. An anode within the geiger tube registers the quantity of ionized particles numerically correlating with the strength of the radioactive radiation. The radioactivity measurement is then displayed on the LCD screen of the geiger counter or nuclear radiation detector.
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Rub Tester and Abrasion Tester
RT4
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This comparative test works by abrading a printed sample against a reference material under known conditions. The results can be used to identify alternative substrates, better ink and coating formulations or the suitability of finished cartons, films or printed books, magazines and promotional materials.
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"Extremely Random" Precision Noise Generator
Model 3025
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The Model 3025, "Extremely Random"TM Precision Noise Generator supplies White and Pink Noise, and a 1 kHz reference signal. Crystal controlled - the pseudo random circuitry provides a 6.5 Day pseudo-random cycle time, assuring a "Extremely Random"TM noise source.
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Digital to Synchro and Digital to Resolver Converters
Digital / Synchro Converter
Computer Conversions Corporation
1.2VA, 1.5VA, 4.5VA and 5VA Models60 or 400, & 60 and 400 Hz. Models to 22 KHz.Trouble Free Isolated Reference Inputs & Signal OutputsUltra High Efficiency, Low DistortionSelf Powered off the AC Reference Input (DSP Series)Internal Cool AC-Pulsating Supplies (DSP Series)Very Low Loss & Heat DissipationFULLY INTEGRATED, NO EXTERNAL COMPONENTS REQUIREDVery High Resistance to Shock and VibrationHigh Reliability Throughout ImplementationIsolated, Transient, Therrnally & Short Circuit Protected Outputs
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4/8-CH 12-Bit 1 MS/s Analog Output Multi-Function DAQ Cards
DAQ-2500 Series
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ADLINIK DAQ-2501 and DAQ-2502 are high-speed and high-performance analog output multifunction DAQ cards. The devices are able to update up to 8-CH, 12-bit analog outputs simultaneously at sustaining 1 MS/s. The reference sources and the output polarities are programmable on per channel basis, combining with the multiplying DAC architecture, ADLINK DAQ-2500 series DAQ cards can generate complex modulated analog signals. The hardware-based arbitrary waveform generation frees the CPU intervention even when all analog outputs are updating at full speed, and the lengths of waveforms are only limited by the system memory. The DAQ-2500 series integrate up to 8-CH, 400 kS/s, 14-bit single-ended analog inputs with programmable polarity, 24-CH programmable digital I/O lines, and 2-CH 16-bit general-purpose timer/counters.
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SH68-68-EPM Shielded Cable, 68 D-Type to 68 D-Type, 0.35m
199006-0R35
Multifunction Cable
68-Pin Female to 68-Pin Female, Twisted Pair, Shielded Multifunction Cable - The SH68F-68F-EPM Cable, sometimes referred to as SH68-68-EPM, connects NI DAQ 68-pin devices to 68-pin accessories. The SH68F-68F-EPM Cable has D-type connectors and is offered in different lengths.
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2-Channel DAQ Module
FMC150
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Sundance Multiprocessor Technology Ltd.
The FMC150 is a dual channel ADC and dual channel DAC FMC daughter card. The card provides two 14-bit A/D channels and two 16-bit D/A channels which can be clocked by an internal clock source (optionally locked to an external reference) or an externally supplied sample clock. In addition there is one trigger input for customized sampling control. The FMC150 daughter card is mechanically and electrically compliant to the FMC standard (ANSI/VITA 57.1).
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Frequency Standards
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Precision Test manufacturers a complete range of frequency standards. This includes rubidium and OXCO models either free running or controlled by an external reference (GPS, GLONASS, Galileo, 1pps, 5 MHz, 10 MHz, IRIG-B etc). Output frequencies typically 1 MHz, 5 MHz, 10 MHz, 10.23 MHz, 13 MHz, 100 MHz or bespoke frequency.
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DC - 400 MHz PC-Based Timer Interval Analyzer
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GuideTech’s GT658PCI is an ultra-fast, high resolution, DC – 400 MHz Time Interval Analyzer (TIA), ideal for most PC-based lab bench (timing) test applications. What makes the GT 658 superior to traditional counters is analogous to the difference between volt meters & digital scopes. While both measure voltage, the scope provides much more information about the dynamics of the signal. This is because our patented TIA substantially increases measurement speed, and the measurements are displayed as afunction of time. All of these features, along with the benefit of ‘continuous time correlation to a common reference between all measurement time stamps,’ enable our TIAs to make measurements that weren’t previously possible with traditional counters.
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Satellite Signal Monitoring, Reference Solution
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The Keysight Satellite Signal Monitoring, Reference Solution is a fast, effective solution for monitoring large blocks of spectrum combined with precise digital modulation analysis to validate satellite signal integrity up to 50 GHz. Built upon a modular instrument format (PXIe), its attributes include: excellent instrument density, expandable multi-channel support, and high data bus speeds, ideal for multi-band monitoring. To provide flexibility, a choice of vector signal analyzers (M9391A and M9393A) is available to tailor the system frequency ranges as needed.
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AC Reference Generators
SR22
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Computer Conversions Corporation
The SR Series are miniature, low cost AC reference generators designed to supply 26 or 115 volt excitation to synchros or resolvers in military and industrial control applications. They accept +/-15V DC and provide up to 5VA of transformer isolated output power. These converters are packaged in PC card mounting modules 2.6”x3.1”x1”H
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Measurement Of Straightness, Flatness, Positioning Uncertainty Of Round Tables
RTM - Measurement Of Positioning Uncertainty Of Indexing Tables
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Optik Elektronik Gerätetechnik GmbH
RTM is a software for the measurement of positioning uncertainty of indexing tables using an electronic autocollimator and a polygon mirror as angle reference.
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33 GHz Optical Probe
DPO7OE1
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The DPO7OE1 is a 33 GHz, low noise, broad wavelength optical probe with optical reference receiver (ORR) performance for 28Gbaud PAM4 and PAM2 (NRZ). The DPO7OE1 can be used as a conventional Optical-to-Electrical (O/E) converter for wide-bandwidth optical signal acquisition. The DPO7OE1 provides an FC/PC or FC/APC optical connection for Tektronix DPO/MSO70000 C/DX/SX model oscilloscopes for high-speed optical signal verification.
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Voice Quality Test System
MultiDSLA
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MultiDSLA solution is a state of the art measurement system for Voice Quality Testing and Performance Assessment used by many organisations as the reference measurement in applications ranging from core technology development to network operations.
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Portable Connector End Face Geometry Interferometer
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Thorlabs’ Vytran® Connect-Chek® Interferometer automatically and precisely measures radius of curvature, apex offset of polish, and fiber undercut or protrusion on any PC or APC, single-fiber connector. The CC6000 interferometer uses a non-contact tilted-phase-analysis technique for fast, reliable measurements of connector end faces. This compact interferometer has a carrying handle and must be attached to a desktop or laptop computer (not included) with a standard USB 2.0 port for operation. The included CC6000 software, which is used to control the interferometer, can be installed on a computer with the minimum requirements in the table below. Designed for use in both the factory and the field, this interferometer provides crucial quality information needed to assure long-term performance of fiber optic connectors. One CC250P Mount for Ø2.50 mm PC Connectors and one RT250P Reference Tool for calibrating the CC250P mount are included with the CC6000 interferometer; mounts and reference tools that enable measurement of other PC or APC, single-fiber connectors are available separately below. When used with an appropriate mount for APC connectors, the CC6000 interferometer is also capable of measuring the APC angle and key error.
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True RMS RF Millivoltmeter
3440A
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The 3440A measures the true rms of low level RF and microwave signals to over 1GHz. High rms accuracy, traceable to NIST, is assured regardless of waveshape. Common calibration errors are eliminated through temperature compensation of the probe detector diodes; double shielding protects the interchangeable probes from rough handling and pickup. Relative gain or loss measurements are simplified by a 0 dB reference adjustment. DC output proportional to the ac input is provided for analog recorders and to allow operation as an ac-dc converter.
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Industrial Calibrators
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A temperature calibrator, often called a thermometer calibrator, is used to correct inaccuracies in installed thermometers and temperature sensors, because temperature measurement is a critical parameter in many industrial processes. Although simulators are sometimes called temperature calibrators or thermometer calibrators and may be used to provide thermometer calibration for the electronics in an installed system, a temperature source with a calibrated reference sensor is still required to provide a complete and meaningful calibration. Fluke Calibration industrial and field temperature calibrators include: Metrology Wells; Field Metrology Wells; field dry-well calibrators; handheld dry block calibrators; Micro-Baths; large target infrared calibrators; field IR calibrators; ice-point dry-well; and thermocouple furnaces.
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4-Channel 200 MHz, 16-bit A/D with Virtex-6 FPGA - 3U VPX
Model 52660
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- Complete radar and software radio interface solution- Supports Xilinx Virtex-6 LXT and SXT FPGAs- Supports gigabit serial fabrics including PCI Express, Serial RapidIO and Xilinx Aurora- Four 200 MHz 16-bit A/Ds- Up to 2 GB of DDR3 SDRAM or 32 MB of QDRII+ SRAM- Sample clock synchronization to an external system reference- LVPECL clock/sync bus for multiboard synchronization- Optional LVDS connections to the Virtex-6 FPGA for custom I/O- 3U VPX form factors provides a compact, rugged platform- Compatible with several VITA standards including: VITA-46, VITA-48 AND VITA-65 (OpenVPX™ System Specification)- Ruggedized and conduction-cooled versions available
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Countdown Or Countup Clock Controller
RC600
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The RC600 is a remote control that adds both countdown and countup timer control features to our NTDS and TCDS clocks. Reference or generate time input from NTP or time code (IRIG & SMPTE). Control a virtually unlimited number of time code clocks and network clocks.
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4-Channel DAC FMC Module
FMC204 – HPC
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Sundance Multiprocessor Technology Ltd.
The FMC204 is a quad channel DAC FMC. The FMC204 provides four channels of 16-bit D/A @ 1 GSPS enabling simultaneous sampling at a maximum rate of 1 GSPS. The sample clock can be supplied externally through a coax connection or supplied by an internal clock source (optionally locked to an external reference). Additionally a trigger input for customized sampling control is available. The FMC204 daughter card is mechanically and electrically compliant to FMC standard (ANSI/VITA 57.1).
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OnyxFX FlexorSet 4-Ch. 250 MHz A/D w/DDCs, 2-Ch. 800 MHz D/A w/DUC, Int - 3U VPX
Model 5973-313
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- Supports Xilinx Virtex-7 VXT FPGAs- GateXpress supports dynamic FPGA reconfiguration across PCIe- Four 250 MHz 16-bit A/Ds- Four multiband DDCs- One digital upconverter- Two 800 MHz 16-bit D/As- Extended Interpolation- Sample clock synchronization to an external system reference- PCI Express (Gen. 1, 2 and 3) interface up to x8- User-configurable gigabit serial interface- Optional optical Interface for backplane gigabit serial interboard communication- Optional LVDS connections to the Virtex-7 FPGA for custom I/O- Compatible with several VITA standards including: VITA-46, VITA-48 AND VITA-66.4 and VITA-65 (OpenVPX™ System Specification)- Ruggedized and conduction-cooled versions available- See comparable JadeFX Xilinx Kintex UltraScale FPGA Family:- Model 5983 JadeFX Kintex UltraScale Processor and FMC Carrier 3U VPX- Model 5983-313 JadeFX FlexorSet 4-Ch. 250 MHz A/D w/DDCs, 2-Ch. 800 MHz D/A w/DUC, Int - 3U VPX
